From 876ec52215ec2ff251e0ee85f2e065ddd382dcf7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Marczykowski-G=C3=B3recki?=
 <marmarek@invisiblethingslab.com>
Date: Thu, 4 Oct 2018 18:16:34 +0200
Subject: [PATCH] Use SOURCE_DATE_EPOCH for metadata timestamps
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

This include .buildinfo, .treeinfo and .discinfo.

Signed-off-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
---
 src/pylorax/buildstamp.py | 7 ++++++-
 src/pylorax/discinfo.py   | 8 +++++++-
 src/pylorax/treeinfo.py   | 8 +++++++-
 3 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/src/pylorax/buildstamp.py b/src/pylorax/buildstamp.py
index 0925be73..69504e19 100644
--- a/src/pylorax/buildstamp.py
+++ b/src/pylorax/buildstamp.py
@@ -23,6 +23,7 @@ import logging
 logger = logging.getLogger("pylorax.buildstamp")
 
 import datetime
+import os
 
 
 class BuildStamp(object):
@@ -34,7 +35,11 @@ class BuildStamp(object):
         self.isfinal = isfinal
         self.variant = variant
 
-        now = datetime.datetime.now()
+        if 'SOURCE_DATE_EPOCH' in os.environ:
+            now = datetime.datetime.utcfromtimestamp(
+                int(os.environ['SOURCE_DATE_EPOCH']))
+        else:
+            now = datetime.datetime.now()
         now = now.strftime("%Y%m%d%H%M")
         self.uuid = "{0}.{1}".format(now, buildarch)
 
diff --git a/src/pylorax/discinfo.py b/src/pylorax/discinfo.py
index 9dad83bd..311bae33 100644
--- a/src/pylorax/discinfo.py
+++ b/src/pylorax/discinfo.py
@@ -22,6 +22,7 @@
 import logging
 logger = logging.getLogger("pylorax.discinfo")
 
+import os
 import time
 
 
@@ -32,8 +33,13 @@ class DiscInfo(object):
         self.basearch = basearch
 
     def write(self, outfile):
+        if 'SOURCE_DATE_EPOCH' in os.environ:
+            timestamp = int(os.environ['SOURCE_DATE_EPOCH'])
+        else:
+            timestamp = time.time()
+
         logger.info("writing .discinfo file")
         with open(outfile, "w") as fobj:
-            fobj.write("{0:f}\n".format(time.time()))
+            fobj.write("{0:f}\n".format(timestamp))
             fobj.write("{0.release}\n".format(self))
             fobj.write("{0.basearch}\n".format(self))
diff --git a/src/pylorax/treeinfo.py b/src/pylorax/treeinfo.py
index 4c840061..cc1ad3f5 100644
--- a/src/pylorax/treeinfo.py
+++ b/src/pylorax/treeinfo.py
@@ -23,6 +23,7 @@ import logging
 logger = logging.getLogger("pylorax.treeinfo")
 
 import configparser
+import os
 import time
 
 
@@ -33,8 +34,13 @@ class TreeInfo(object):
 
         self.c = configparser.ConfigParser()
 
+        if 'SOURCE_DATE_EPOCH' in os.environ:
+            timestamp = os.environ['SOURCE_DATE_EPOCH']
+        else:
+            timestamp = str(time.time())
+
         section = "general"
-        data = {"timestamp": str(time.time()),
+        data = {"timestamp": timestamp,
                 "family": product,
                 "version": version,
                 "name": "%s-%s" % (product, version),